Does anyone have experience with the Reefkeeper TM4 module that allows you to have up to four heaters in a single bus (or at least I think on a single bus)? There is no information out there that I was able to locate.

I have a 180 DT with two heaters and a 100g sump with one heater, but want to control them with my RKL. My JBJ controller just crappped out.